A common cancer in an uncommon location: A case report of squamous cell carcinoma of the nipple

INTRODUCTION Cutaneous squamous cell carcinoma (SCC) is common however SCC is rarely seen on the nipple, with only ten cases of SCC of the nipple in literature (American Cancer Society, 2015; Scotto et al., 1983; Pendse and O'Connor, 2015; Loveland-Jones et al., 2010; Brookes et al., 2005; Sofos et al., 2013; King and Kremer, 2012; Venkataseshan et al., 1994; Hosaka et al., 2011) [1-9]. CASE An 80 year old female presenting with a chief complaint of an abnormal lesion on the medial portion of her right nipple areola complex. A biopsy showed well-differentiated squamous cell carcinoma. She had an extensive history of prolonged sun exposure predisposing her to cutaneous SCC however none to the breast region. Her mammogram was negative for any invasive disease so a wide local excision was performed with no complications. DISCUSSION Due to the rarity of SCC of the breast or nipple, a biopsy is necessary to rule out other more common types of malignancies on the nipple that present with a similar physical appearance. We then examined the many different risk factors for SCC and the different methods for treating SCC whether it is cutaneous or of the nipple or breast. We also discussed the treatment of Paget's disease of the breast (PDB) as SCC of the nipple or breast can be mistaken for PDB. CONCLUSION The cases of SCC of the Nipple demonstrate the importance of recognizing changes of the skin even in locations not typically associated with SCC (American Cancer Society, 2015; Scotto et al., 1983; Pendse and O'Connor, 2015; Loveland-Jones et al., 2010; Brookes et al., 2005; Sofos et al., 2013; King and Kremer, 2012; Venkataseshan et al., 1994; Hosaka et al., 2011) [1-9]. We concluded with a future suggestion of investigating possible risk factors specific to SCC of the breast or nipple.